How is it that a neo-Nazi rally targeting Jewish people was allowed to take place on the steps of the New South Wales parliament? 

Why is it that the same group of people, who want a 'white Australia', could be allowed to form a political party?

Today, extremism expert Josh Roose explains the tactics neo-Nazi groups are using to skirt the law and continue to build their brand. 

He outlines why even in a liberal democracy where extremism is often tolerated, it might be time to think about ways to ban the movement. 

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Josh Roose, extremism expert and an associate professor in politics at Deakin University